[CSS Grid Layout] Removing Content Alignment logic from track sizing alg

Source/core/layout/LayoutGrid.h

 /*
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 14 matching lines @@
 
 #ifndef LayoutGrid_h
 #define LayoutGrid_h
 
 #include "core/layout/LayoutBlock.h"
 #include "core/layout/OrderIterator.h"
 #include "core/style/GridResolvedPosition.h"
 
 namespace blink {
 
+struct ContentAlignmentData;
 struct GridCoordinate;
 struct GridSpan;
 class GridTrack;
 
 enum TrackSizeComputationPhase {
     ResolveIntrinsicMinimums,
     ResolveMaxContentMinimums,
     ResolveIntrinsicMaximums,
     ResolveMaxContentMaximums,
     MaximizeTracks,
@@ skipping 75 matching lines @@
     PassOwnPtr<GridCoordinate> createEmptyGridAreaAtSpecifiedPositionsOutsideGrid(const LayoutBox&, GridTrackSizingDirection, const GridSpan& specifiedPositions) const;
     void placeSpecifiedMajorAxisItemsOnGrid(const Vector<LayoutBox*>&);
     void placeAutoMajorAxisItemsOnGrid(const Vector<LayoutBox*>&);
     void placeAutoMajorAxisItemOnGrid(LayoutBox&, std::pair<size_t, size_t>& autoPlacementCursor);
     GridTrackSizingDirection autoPlacementMajorAxisDirection() const;
     GridTrackSizingDirection autoPlacementMinorAxisDirection() const;
 
     void layoutGridItems();
     void layoutPositionedObjects(bool relayoutChildren, PositionedLayoutBehavior = DefaultLayout);
     void offsetAndBreadthForPositionedChild(const LayoutBox&, GridTrackSizingDirection, bool startIsAuto, bool endIsAuto, LayoutUnit& offset, LayoutUnit& breadth);
-    void populateGridPositions(const GridSizingData&);
+    void populateGridPositions(GridSizingData&, LayoutUnit availableSpaceForColumns, LayoutUnit availableSpaceForRows);
 
     typedef struct GridItemsSpanGroupRange GridItemsSpanGroupRange;
     LayoutUnit currentItemSizeForTrackSizeComputationPhase(TrackSizeComputationPhase, LayoutBox&, GridTrackSizingDirection, Vector<GridTrack>& columnTracks);
     void resolveContentBasedTrackSizingFunctionsForNonSpanningItems(GridTrackSizingDirection, const GridCoordinate&, LayoutBox& gridItem, GridTrack&, Vector<GridTrack>& columnTracks);
     template <TrackSizeComputationPhase> void resolveContentBasedTrackSizingFunctionsForItems(GridTrackSizingDirection, GridSizingData&, const GridItemsSpanGroupRange&);
     template <TrackSizeComputationPhase> void distributeSpaceToTracks(Vector<GridTrack*>&, const Vector<GridTrack*>* growBeyondGrowthLimitsTracks, GridSizingData&, LayoutUnit& availableLogicalSpace);
 
     double computeNormalizedFractionBreadth(Vector<GridTrack>&, const GridSpan& tracksSpan, GridTrackSizingDirection, LayoutUnit availableLogicalSpace) const;
 
     GridTrackSize gridTrackSize(GridTrackSizingDirection, size_t) const;
 
     LayoutUnit logicalHeightForChild(LayoutBox&, Vector<GridTrack>&);
     LayoutUnit minContentForChild(LayoutBox&, GridTrackSizingDirection, Vector<GridTrack>& columnTracks);
     LayoutUnit maxContentForChild(LayoutBox&, GridTrackSizingDirection, Vector<GridTrack>& columnTracks);
     GridAxisPosition columnAxisPositionForChild(const LayoutBox&) const;
     GridAxisPosition rowAxisPositionForChild(const LayoutBox&) const;
-    LayoutUnit columnPositionForChild(const LayoutBox&) const;
-    LayoutUnit rowPositionForChild(const LayoutBox&) const;
-    void computeContentPositionAndDistributionRowOffset(LayoutUnit availableFreeSpace, GridSizingData&) const;
-    void computeContentPositionAndDistributionColumnOffset(LayoutUnit availableFreeSpace, GridSizingData&) const;
+    LayoutUnit rowAxisOffsetForChild(const LayoutBox&) const;
+    LayoutUnit columnAxisOffsetForChild(const LayoutBox&) const;
+    ContentAlignmentData computeContentPositionAndDistributionOffset(GridTrackSizingDirection, LayoutUnit availableFreeSpace, unsigned numberOfGridTracks) const;
     LayoutPoint findChildLogicalPosition(const LayoutBox&, GridSizingData&) const;
     GridCoordinate cachedGridCoordinate(const LayoutBox&) const;
 
     LayoutUnit gridAreaBreadthForChild(const LayoutBox& child, GridTrackSizingDirection, const Vector<GridTrack>&) const;
+    LayoutUnit gridAreaBreadthForChildIncludingAlignmentOffsets(const LayoutBox&, GridTrackSizingDirection, const GridSizingData&) const;
+
+    void applyStretchAlignmentToTracksIfNeeded(GridTrackSizingDirection, GridSizingData&, LayoutUnit availableSpace);
 
     virtual void paintChildren(const PaintInfo&, const LayoutPoint&) override;
     bool allowedToStretchLogicalHeightForChild(const LayoutBox& child) const;
     bool needToStretchChildLogicalHeight(const LayoutBox&) const;
     LayoutUnit childIntrinsicHeight(const LayoutBox&) const;
     LayoutUnit childIntrinsicWidth(const LayoutBox&) const;
     LayoutUnit intrinsicLogicalHeightForChild(const LayoutBox&) const;
     LayoutUnit marginLogicalHeightForChild(const LayoutBox&) const;
     LayoutUnit computeMarginLogicalHeightForChild(const LayoutBox&) const;
     LayoutUnit availableAlignmentSpaceForChildBeforeStretching(LayoutUnit gridAreaBreadthForChild, const LayoutBox&) const;
@@ skipping 28 matching lines @@
     OrderIterator m_orderIterator;
     Vector<LayoutBox*> m_gridItemsOverflowingGridArea;
     HashMap<const LayoutBox*, size_t> m_gridItemsIndexesMap;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutGrid, isLayoutGrid());
 
 } // namespace blink
 
 #endif // LayoutGrid_h